<template>
    <div class="login_container">
        <div class="login_box">
            <!--头像区域-->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!--登录表单区域-->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="80px" class="login_form">
                <!--用户名-->
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="loginForm.username"></el-input>
                </el-form-item>
                <!--密码-->
                <el-form-item label="密码" prop="password">
                    <el-input v-model="loginForm.password" type="password"></el-input>
                </el-form-item>
                <!--按钮区域-->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default{
    data(){
        return{
            //这是登录表单的数据绑定对象
            loginForm:{
                username:'csy',
                password:'123456'
            },
            //这是表单的验证规则对象
            loginFormRules:{
                //验证用户名是否合法
                username:[
                    {required:true,message:"请输入登录名称",trigger:"blur"},
                    {min:3,max:10,message:"长度在3到10个字符",trigger:"blur"}
                ],
                password:[
                    {required:true,message:"请输入登录密码",trigger:"blur"},
                    {min:6,max:15,message:"长度在6到15个字符",trigger:"blur"}
                ]
            }
        };
    },
    methods:{
        //点击重置按钮重置登录表单
        resetLoginForm(){
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            //表单预验证
            this.$refs.loginFormRef.validate(valid => {
                console.log(valid);
                //通过编程式导航跳转到后台主页，路由地址是/home
                this.$router.push("/home");
                //message弹框
                return this.$message.success("登陆成功")
            });
        }
    }
};
</script>

<style lang="less" scoped>
.login_container{
    background-color:#2b4b6b;
    height:100%;
}

//登录框
.login_box{
    width:450px;
    height:300px;
    background-color:#fff;
    border-radius:3px;
    position:absolute;
    left:50%;
    top:50%;
    transform: translate(-50%,-50%);

    //嵌套 头像图片
    .avatar_box{
        height:130px;
        width:130px;
        //边框线
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        //阴影
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left:50%;
        transform: translate(-50%,-50%);
        background: #fff;
        img{
            width:100%;
            height:100%;
            //圆角
            border-radius: 50%;
            background-color:#eee;
        }
    }
}

//登录框
.login_form{
    position: absolute;
    bottom: 0;
    width:100%;
    padding: 0 20px;
    box-sizing: border-box;
}

//按钮
.btns{
    display:flex;
    //尾部对齐
    justify-content:flex-end ;
}
</style>